YESTERDAY, WE HAD FLASH FLOODING, POSSIBLE TORNADOES AND MICROBURSTS. AND ROGER, THESE ALL HAVE SOMETHING IN COMMON: LIGHTNING. YES, AND IT'S SOMETHING WE'RE FOCUSING ON TONIGHT. WE HAVE ALL THESE WATCHES AND WARNINGS TO KEEP YOU SAFE. BUT THE GREATEST DANGER WITH LIGHTNING IS WHEN YOU'RE CAUGHT OUTSIDE, WITH NOWHERE TO GO. IT STRIKES THE GROUND 100 TIMES EVERY SECOND. IT'S RANDOM, UNPREDICTABLE AND OFTEN FATAL LIGHTNING IS THE SECOND BIGGEST WEATHER KILLER IN THE UNITED STATES HERE IN MAINE 4 PEOPLE HAVE DIED .. IN JUST THE PAST 10 YEARS. JUST ONE STRIKE CONTAINS 300 MILLION VOLTS; IT ONLY TAKES 120 VOLTS TO KILL YOU. SO WHAT SHOULD YOU DO ..ON A HOT SUMMER DAY ..WHEN THE SKY TURNS DARK ..AND A STORM IS APPROACHING? JENSENIUS: LIGHTNING CAN STRIKE UP TO 10 MILES AWAY FROM A THUNDERSTORM AND YOU CAN ONLY HEAR THUNDER ABOUT 10 MILES AWAY. SO IF YOU CAN HEAR THUNDER YOU NEED TO GET INSIDE RIGHT AWAY. RG STAND: EXPERTS AGREE GETTING INSIDE OF A STURDY BUILDING SHOULD ALWAYS BE YOUR FIRST CHOICE ..BUT IF WHAT IF THAT'S NOT AN OPTION? SAY YOU'RE AT THE BEACH..OR MAYBE IN AN OPEN FIELD? YOUR SECOND SAFEST SPOT ..IS RIGHT HERE ..INSIDE A CAR. THAT'S BECAUSE A CAR'S METAL FRAME ACTS AS A SHELL AND ABSORBS THE LIGHTNING, SENDING IT SAFELY TO THE GROUND. DURING THE SUMMER MONTHS .. THE DANGER OF LIGHTNING INCREASES ..NOT JUST BECAUSE THERE ARE MORE STORMS, BUT BECAUSE OUR LIFESTYLE TAKES US OUTSIDE AND OFTEN FARTHER AWAY FROM A SAFE SHELTER. BOATERS FACE THE GREATEST CHALLENGE .. IF YOU'RE CAUGHT ON THE OPEN WATER YOU NEED TO GET TO SHORE IMMEDIATELY AND THEN MOVE AWAY FROM THE SHORELINE. JENSENIUS: YOU CERTAINLY DON'T WANT TO BE OUT IN THE WATER WHERE #1 ..YOU ARE THE TALLEST OBJECT AND #2 ..IF YOU ARE STRUCK, YOU ARE GOING TO BE UNCONSCIOUS AND BEING UNCONSCIOUS AND IN THE WATER IS A DEADLY COMBINATION. IT'S IMPORTANT THAT PEOPLE PLAN AHEAD, THAT THEY WATCH THE SKY, IF THEY SEE A THUNDERSTORM DEVELOPING THAT THEY TAKE ACTION BEFORE THEY HEAR THE THUNDER ..BECAUSE IT DOES TAKE MORE TIME TO GET INDOORS. NOW IF YOU DO COME ACROSS SOMEONE WHO'S BEEN STRUCK BY LIGHTNING, THEY ARE SAFE TO TOUCH. BUT THE FIRST THING YOU SHOULD DO, OF COURSE, IS CALL "9-1-1." STARTING "C-P-R" IMMEDIATELY CAN OFTEN MEAN THE DIFFERENCE BETWEEN LIFE AND DEATH FOR THE